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GPU power limit
- Thread starter Zeebedy
- Start date
A really good way to play around with your GPU is to run ‘Heaven’ benchmark (in a window) and have MSI afterburner open next to it:
Heaven will max out your GPU. You can then, in real time, play around with overclocks, undervolts and simple power limit changes in MSI Afterburner to see what the impact is.
Whatever you’re doing, just head in that direction in increments. If you go ‘too far’ then Heaven benchmark will show obvious glitching / artefacts or will crash entirely.
Give it a try and see what happens - as mentioned above, it’s trial and error
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Soldato
- Joined
- 30 Nov 2011
- Posts
- 11,513
yes it should and won't affect performance hardly at all (like single digits typically), however undervolting is a much better way of doing it, e.g. I had my 3080 running at 875mv at 1920mhz and it both reduced temps AND improved performance
you set afterburner to like -400mhz, open the curve editor, find the set point you want (e.g. 875mv) and drag it up to the mhz you want (e.g. 1920), then click apply and every point after that will lock itself to the mhz you set
what card is it?
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Note that if you undervolt without a power or fps cap it doesn't necessarily have the desired effect.
Every card will be different, of course, but you can probably find some videos or articles appropriate to your model.
I doubt you have a 5090, but this video has some benchmarks will give you an idea (look at the chart around 7:20):
Every card will be different, of course, but you can probably find some videos or articles appropriate to your model.
thanks for all the input guys!
The card is a 4070ti Super.. and runs well in most games, but in particular on Path Of Exiles 2 after a couple of hours playing, the game is in the low 80s with fan speed around 50%..
I was wanting to just step the power back a bit if it would have impacted the gaming temps on it.
The card is a 4070ti Super.. and runs well in most games, but in particular on Path Of Exiles 2 after a couple of hours playing, the game is in the low 80s with fan speed around 50%..
I was wanting to just step the power back a bit if it would have impacted the gaming temps on it.
Associate
- Joined
- 22 Oct 2012
- Posts
- 1,221
It'll work, but at the cost of performance. Agree with Tetras that combining undervolt and power limit is a good approach.
You lose very little performance on most cards, even right down to something around 70%, since they're usually pushed pretty hard out of the box.
A frame cap is the most brutal and effective solution which would impact temps/power use hugely.
Those aren't high temperatures for a GPU under stress.
GPU itself isn't the concern, it's specifically the power cable and connector itself (speaking from experience, PC in our household having had a 4090 cable connector melt into the card).
yeah, I made sure I connected the cable to the GPU properly as I was worried about the cable melting etc..
The default fan curve is set to minimise noise, so the fans will basically let the card heat up as much as is safe (to about 80C) before really ramping up in order to make less noise. Of course, if you'd prefer to have lower temps at the cost of more noise you can set your own fan curves.
However the default fan curves also use a decent amount of hysteresis, AFAIK there is no way to have a custom fan curve AND hysteresis.